Question about 1998 Honda VF 750 C Magna

1 Answer

Engine only runs with choke on

Hello,

my motorcycle was left for about 4 months with the fuel left in it. i drained all the bad fuel out of the system. i filled it up with supreme gasoline. i then attempted to start the bike. it will run with the choke on but will shut off as soon as you turn the choke off. the bike warms up but never idles up with the choke on. i removed the carbs and checked the floats and jets. i cleaned all of them (there really was no build up) and i also replaced the spark plugs. when i installed the carbs i still have the same problem. i did not completly dis-assemble the carbs i only removed the float and jet covers. any info on this would be greatly appreciated.

Posted by on

  • jbarnett7580 Apr 13, 2009

    are there other jets besides the slow and main? i have cleaned all four of the slow and all four of the main and can see light through them.

  • jbarnett7580 Apr 14, 2009

    Thanks! will try when i return home.

×

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 53 Answers

Dear honda 750 your problem is a pluged main jet you must completley disasseble the carbs and give them a good cleaning with carb cleaner and comp air visually check to make sure you can see light through the jets after cleaning. your choke system by passes the jets that is why it runs on the choke setting only. hope this helps jim

Posted on Apr 12, 2009

  • jim cob Apr 13, 2009

    dont forget to clean jet needle and needle jet slide located in the carb top and center. if all looks good i would check fuel filter and screen located in tank also make sure you have fuel at the carb by removing fuel line and turning on the petcock. jim

×

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Triumph Legend 1998 same as Thunderbird 900motorcycle running badly.


Was the bike working okay after the overhaul? Mis firing due to bad setup or very bad fuel.If it has not run right since the work was carried out ask the repairer to take a look.
If it only started to go awry after using wheap fuel, (it should still be of uniform quality with other fuel,)
I would drain the tank and refill with premium. Try not to get any air into the system if you do this, makes life easier

GOOD LUCK

Jun 18, 2015 | Triumph Thunderbird Motorcycles

1 Answer

TRACTOR WILL NOT STAY RUNNING


Give it a tune-up, spark plug, oil change, fuel filter, air filters... Drain gas completely from gas tank and carburetor... Fill with fresh fuel. White smoke from muffler means there is water in the system... Fuel "goes bad" as soon as 1 month.

Nov 18, 2013 | Garden

1 Answer

Looking for information on 1988 honda vlx radiator


Instructions
    • 1 Remove the motorcycle's carburetor and clean it with carburetor cleaner, getting rid of any and all grime and deposits within. If necessary, use an air compressor with a small tip to blow out any clogged lines within the carburetor.
    • 2 Check the motorcycle's fuel tank for old fuel. Drain the fuel tank completely and refill the tank with fresh fuel. Old gasoline isn't good for most motors, especially older ones.
    • 3 Remove the motorcycle's seat by unscrewing the two mounting bolts on both sides of the back of the seat with a 12 mm socket wrench. Pop off the top of the air box and remove the bike's air filter. Clean this thoroughly in hot, soapy water. Rinse it off, let it air-dry then apply air filter oil before reinstalling it in the motorcycle.
    • 4 Check the tire pressure and integrity of both tires on the motorcycle. If either tire is flat, leaking air or overly worn, replace the tire and tube.
    • 5 Change the motorcycle's oil. Warm the bike up, then remove the oil drain plug underneath the transmission and drain the oil. While the drain plug is still loose, fill the oil reservoir until oil begins to run out of the plug. This means the reservoir is full. Tighten the drain plug.

Jan 20, 2013 | Honda VT 600 C Shadow Motorcycles

1 Answer

Bike don,t start petrol gets to plugs


drain off the old fuel from the carbs , carb drain screw is on the botton of the float bowl. fill with good fuel and try again.

If no check for spark remove plug fit to coil rest against the head and turn over. Does it spark?

Feb 21, 2012 | Jinlun XR 125 Motorcycles

1 Answer

Hello, my car has sat for about 8 months, 4 months into it, I started it up and once the engine warms up, the idle begins to fluctuate between 1100 and 2000 rpm, up and down up and down it does not do this...


Gasoline left in a cycle or lawn mower over the winter months tends to not burn as clean as fresh gas and eventually will gum up the spark plug, making the engine run rough or hard to start... it's best to drain the tank if you aren't going to use the fuel in a couple months... the colder temperature may also cause the fuel to become less potent, it also turns a darker color I and suspect it may be due to evaporation.

There are products when added to fuel (gas/diesel) to make the fuel more stable over longer periods of time and even renew fuel that's aged...

This is an article I found on gas. I have had this happen to me and if the gas goes bad in lawn mowers I'm sure the same thing will happen in cars just not as common due to cars usually don't sit around.

I would try putting a gas stabilizer in and run that tank of gas till almost empty then fill it and see if the problem is still there.

Also take a look under the hood and look at the wires and vacuum hoses animals seems to like chewing on them some times.

If none of this works repost but let us know if the battery was dead at any time and if the check engine come on while the engine is running.

Jan 06, 2011 | 1997 Honda Civic

1 Answer

Didnt start the motorcycle for four months.will only run with the choke on.


The gas is probably bad after months of sitting.
Ideally, you would drain your tank and replace with good gas f you can.
New gas or not, purchase a can of "Seafoam" and add it to your tank...it will help clean out your fuel system.
Worst case scenario, you will need to clean your carburetor if everything above doesn;t work.

Dec 14, 2010 | 2004 Suzuki VL 800 Volusia

1 Answer

Havent started my bike in 6 months all the lights work but wont start and yes it has gas


is it fresh gas or what was left in the tank when you last used the machine if it is the later drain the fuel & fill whith fresh fuel clean Or better still replace the plugs also after being laid up for six months the oil willhave started to go tar like I recomend you change it let me know how you get on.Geoff

Apr 16, 2010 | 2000 Harley Davidson XL 1200 C Sportster...

1 Answer

YZ 250 STOOD FOR 5 MONTHS WILL NOT KICK OVER ANY HELPFUL IDEARS ?


Hi, if it's stood that long it may be that the fuel's gone off, had a lot that smells like dirty paint thinners after a couple of months & bikes don't want to run on it. I'd drain the carby & tank & try fresh fuel. May just be badly loaded up if fuel was left on etc, so maybe remove sparkplug & give a few good kicks to clear it out, then refit & try. hope this helps :)

Jan 12, 2010 | 2003 Yamaha YZ 250

1 Answer

Sputters past 1/4 idle no power


Put the bike on level ground, support on stands, switch off petrol and drain the carbs. Close the carbs and using the pipe from the tank (disconected) to the carbs fill with a quality carb cleaner and leave overnight. Drain the carbs, connect everything back up and start up. Try and get into the habit of switching off the petrol before you stop the engine, just to partially drain the carbs, esp'ly if you intend to leave for any period of time.

Dec 15, 2008 | 2005 Yamaha V Star Classic

Not finding what you are looking for?
1998 Honda VF 750 C Magna Logo

Related Topics:

473 people viewed this question

Ask a Question

Usually answered in minutes!

Top Honda Experts

Arnie Burke
Arnie Burke

Level 3 Expert

4514 Answers

yadayada
yadayada

Level 3 Expert

75822 Answers

Mike

Level 3 Expert

4336 Answers

Are you a Honda Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...